Automatically-closing valve.



F. H. GOLDSMITH.

AUTOMATICALLY CLOSING VALVE.

APPLICATION FILED MAR.6.1908. 938,574, Patented Nov. 2, 1909.

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FREDERICK H. GOLDSMITH, OF KANSAS CITY, MISSOURI.

AUTOMATICALLY-CLOSING VALVE.

Specification of Letters Patent.

Patented Nov. 2, 1909.

Application filed March 'e, 1908. Serial No. 419,515.

To all whom it may concern:

Be it known that I, FREDERICK H. GoLD- siurrrr, a citizen of the UnitedStates, residmg at Kansas City, in the county of Jackson and State ofMissouri, have invented certain new and useful Improvements inAutomatically Closing Valves, of which the following is arspecification.

My invention relates to improvements in automatically closin valves.

The object of my mvention is to provide means for automatically closingvalves contained in conductors carrying fluid under pressure when suchconductors are accidentally broken or burst.

My invention is particularly adapted for use in steam heating systems inwhich piping is employed to convey steam from a boiler to a radiator.

In a ry ng my i ve on n o elfe t h fluid from the vessel containing theuid, h a m, g or a liquid uc a w t is employed to c ose the valvecontrolling the flow of fluid through the discharge pipe connected withsaid vessel, whenever this dischar e pipe bursts or is otherwise broken.

In t e accompanying drawings which illustrate my invention, Figure 1 isaside elevation of the apparatus, a portion of a boiler and a portion ofa radiator hem shown. Fig. 2 is a central vertical sections view of aportion of the apparatus shown in Fig. 1. F 1g. 3 is an elevation of amodified form of shut-off valve to be used in. the conductor connectingthe boiler with the cylinder in lieu of the ones shown in Figs. 1 and 2.Fig. 4 is a vertical sectional view of the valve shown in Fig.3 disposedso as to connect the boiler and cylinder. Fig. 5 is a view similar toFig. 4, with the valve shown in a position closing the passage betweenthe boiler and cylinder.

Similar characters of reference denote similar parts.

1 denotes a boiler, 2 a radiator and a (lischar e conductor connectingthe boiler and PM iator. Included in said conductor 3 art thereof, is afitting 4 which is provi ed with a vertical hole 5 which forms a rtionof the passa e of the conductor 3-an which is intersect at right anglesby a circular hole 6 which extends horizontally artially through thefitting 4, the outer end of said hole being closed by a head 7 havin acentral horizontal hole in which is slide ly mounted a horizontal rod 8having secured at one end a piston 9 and at the other end a cylindricalvalve 10, which is fitted in the hole 6 and slidable horizon tallytherein to and from a position closing the passagef) of conductor 3. Thepiston 9 1s reciprocative in a cylinder 11 having at one end a centralhorizontal hole in which a cylindrical, horizontal central extension 12of. the piston 9, is reciprocatively mounted. The opposite end of thecylinder 11 has secured to it a head 13 provided-with a centralhorizontal hole in which is reciprocatively mounted therod 8. The twoheads of the cylinder '11 and the head 7 are each provided at theirouter ends with central screw threaded recesses in which are fitted thescrew threaded collars 14, the inner ends of which bear upon stufling'material 15, encircling the rod 8 and extension 12. For

the purpose of withdrawing water from the cylinder 11 the under sidethereof is provided with two vertical screw threaded holes in which aresecured the upper ends of two conductors 16 and 17 which containrespectively valves 18 and 19. Each of said valves is provided with acrank arm 20, said crank arms being connected pivotally to a horizontalrod 21. By swinging the rod 21 horizontally to and fro, the valves18 and19 may be simultaneously opened and simultaneously closed.

' 22 denotes a conductor, one end of which is connected" to the vesselor boiler 1, the

other end being connected to the cylinder 11 at one end of the piston 9.

23 denotes a conductor, one end-of which is connected to the cylinder 11at the opposite end of the 'piston 9, the opposite end i being connectedto the discharge conductor 3 at a point adjacent to the radiator 2. It

'will be noted that the extension12 of the i piston 9 is of reaterdiameter thanthe rod ,7 12, therefore te end of the piston 9, from whichextends the extension 12, will have smaller area subjected to fluidpressure, than the other end of the piston 9. A by pass or conductor 24has one end connected to the discharge conductor 3 intermediate the;valve 10 andboiler 1. The other end of the con-- ductor 24' is connectedto the chamber or hole 6 at the inner end of said hole or chamber. Ashut-oil valve is located in the conductor 22, this valve may be of theordina globe valve type, such as is represent in Fig. 2 by the numeral25.

26 denotes a draw-off cock mounted in a hole 27 communicating with thelower side and right end, as viewed in Fig. 2, of the hole 6.

In operating my invention the valve 25 is closed and the valves 18, 19and 26 are then opened. The steam or other fluid from the boiler orvessel 1 fills the by-pass 24 and the chamber 6, at the left end of thevalve 10, as shown in Fig. 2. The pressure of the fluid in-the by-pass21 is the same as in the boiler 1 so that. when the valve 25 is closedthe valve 10 will be moved to the right so as to open the. conductor 3.At the same time the rod 8 will force the piston 9 to the position shownin dotted lines in Fig. 2. The conductor 3 being opened the steam orfluid will pass to the radiator 2 and will also pass through theconductor 23 into the cylinder 11. The valves 18, 19 and 26 may now beclosed and the valve 25 opened. When the valve 25. is opened the steamwill ass through the conductor 22 from the oiler 1 into the cylinder11.- Inasmuch as the area of the end of the piston 9 which is adjacentto the conductor 22, is less than the opposite end of the piston, thepiston will remain in the position indicated in dotted lines in Fig. 2unless the pressure in the discharge pipe 3 is in any manner reducedbelow a pre-determined amount relative to the pressure in the boiler 1.If the conductor 3 should break or burst at any place intermediate thevalve 10 and the radiator 2, the fluid in the cylinder 11 at the endconnected to conductor 23 would pass from the cylinder through saidconductor and when the pressure became sufiiciently low at that end ofthe piston 9 the pressure of the fluid in the cylinder'at the'oppositeend of the piston 9 will force the piston 9, rod 8 and valve 10 to thepositions shown in solid lines in Fig. 2. In this position the valve 10will close the conductor 3, thus shutting off the steam or fluid fromthe broken conductor so as to permit the same to be readily re aired.

When the orm of valve shown in Figs. 3, 4 and 5 is employed in theconductor 22, it will be unnecessary to open the valves 18 and 19 whensteam is to be admitted to the radiator 2. The valveshown in Figs. 3, 4and 5 comprises a casing 28 having a cylindrical-valve .29 rotativelymounted therein, said valve having a transverse passage 30,whichliglintersected by a passage'31 disposed at right angles thereto.When the valve 29 is positioned as shown in Fig. 4, the passage 30 is inalinement with the passage of conductor 22.

In this position the steam will ass from the boiler 1 into the cylinder11.

hen the valve is positioned as shown in Fig. 5 the passage 31 will alinewith the conductor 22, while the passage 30 will register with aperipheral hole 32 in the valve casing 28. In this position of the valvecomosasm I munication between the boiler and cylinder will be cut offbut air or steam may pass from. the cylinder to the atmosphere throughconductor 22 and passages 31 and 30. "After a break in the conductor 3has been repaired it is but necessary to close the valve 25. The steamthrough the by-pass 24 will then force the valve 10, in-the manneralready described, to the open position.

Various modifications of my invention within the scope of the appendedclaims, may be made without departing from its spirit.

Having thus described my invention, what I claim and desire to secure byLetters Patent, is z- 1. The combination with a vessel adapted tocontain fluid under pressure, of a discharge conductor connectedtherewith, a valve reciprocative to and from a position closing saidconductor, means by which fluid from said vessel is applied at one endof said valve to force it to the open position, a cylinder, a pistonreciprocative in said cylinder, a piston rod to which said valve andpiston are secured, and means by which fluid is conveyed to said 0linder from said discharge conductor ant from said vessel andsimultaneously applied at both ends of said piston.

2. The combination with a vessel adapted to contain fluid underpressure, of a discharge conductor connected therewith, a reciprocativevalve for closing said conductor, means by which fluid from said vesselis applied to said valve in a direction tending to 'force said valve tothe open position, a cvlinder, a piston reciprocative in said cylin erand movable with said valve, opposite ends of said piston havingdifferent areas subjected to fluid pressure, a piston rod to which saidvalve and piston are secured, and means by which fluid is conveyed fromsaid discharge conductor and from said vessel and discharged in saidcylinder at opposite ends of said piston.

3. The combination with a vessel adapted to contain fluid underpressure, of a discharge conductor connected therewith, a valve forclosing said conductor, means by which, when said valve is closed, fluidat a pressure of that contained in the vessel, is applied to the valvein a manner tending to force t-he'same to the open position, a cy1-inder, a piston reciprocating 1n the c linder, a piston rod to whlchsaid valve an piston are secured, conductors connected respec- 'tivelyto the dischar e conductor and to said vessel and connects respectivelyto said cylinder at opposite ends of said piston, and a shut-oil" valvein the conductor connecting the cylinder and vessel.

4. The combination with a vessel for containing fluid under pressure, ofa discharge conductor connected therewith, a valve for intermediate saidinlet 0 nings, a piston rod to which said valve an iston are secured,

- means for applyin to said valve a constant pressure from sai vesseltending. to force said valve to the open position, a conductor connectedat one end with said cylinder at one of said inlet openin s and at theother end connected to said discharge conductor,' a conductor connectedto said cylinder at the other inlet opening and connected to saidvessel, a shut-off valve in the. last named conductor, two valvescontrolling respectively the two discharge openings of said cylmder, andmeans for simultaneously operating said two -valves.

In testimony whereof I have signed my name to this specification inpresence of two subscribing witnesses.

FREDERICK H. GOLDSMITH. Witnesses:

E, B. Hones,

WARREN D. HOUSE.

